The code block shown below contains an error. The code block intended to return a new DataFrame that is the result of an inner join between DataFrame storesDF and DataFrame employeesDF on column storeId. Identify the error.
Code block:
StoresDF.join(employeesDF, Seq("storeId")
The key column storeId needs to be a string like “storeId”. The error in the code block is that the column name should be a string literal to properly specify the join key.
The answer (C) is just the most wrong that could have been here
since the default join is inner so key column should be "StoreId"
I think the question is corrupt. The most plausible answer is A, even though the column name is already presented as a string.
yup, 100% is smth wrong, cause storesDF.join(employeesDF, Seq("storeId")) will work
A is right
A is correct
I don't see any error in the code other than a typo